Awe! So pretty! Yeah, humidity is no good. Cover partially the screen top with tin foil to keep humidity up. Temps are no good either, it's very possible though your thermometer is not that great. Try digital.

Yes, they don't need full spectrum light, if supplemented properly, but will benefit from it. And no, they are not eating monsters, it's stereotype, they eat huge amounts of food while growing, but no so much as adults.